BS EN 62271-211-2014 High-voltage switchgear and controlgear Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV.pdf

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1、BSI Standards PublicationHigh-voltage switchgear and controlgearPart 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kVBS EN 62271-211:2014National forewordThis British Standard is the UK implementation of EN 62271-211:2014. I

2、t isidentical to IEC 62271-211:2014.The UK participation in its preparation was entrusted by TechnicalCommittee PEL/17, Switchgear, controlgear, and HV-LV co-ordination, toSubcommittee PEL/17/1, High-voltage switchgear and controlgear.A list of organizations represented on this committee can be obta

3、ined onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 74141 8ICS 29.130.10Compliance with

4、a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62271-211:2014EUROPEAN STANDARD

5、NORME EUROPENNE EUROPISCHE NORM EN 62271-211 June 2014 ICS 29.130.10 English Version High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV (IEC 62271-211:2014) Appareillage haute ten

6、sion - Partie 211: Raccordements directs entre transformateurs de puissance et appareillage sous enveloppe mtallique isolation gazeuse de tensions assignes suprieures 52 kV (CEI 62271-211:2014) Hochspannungs-Schaltgerte und -Schaltanlagen - Teil 211: Direkte Verbindungen zwischen Leistungstransforma

7、toren und gasisolierten metallgekapselten Schaltanlagen fr Bemessungsspannungen ber 52 kV (IEC 62271-211:2014) This European Standard was approved by CENELEC on 2014-05-29. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu

8、ropean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official v

9、ersions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical

10、committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovak

11、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENE

12、LEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62271-211:2014 E BS EN 62271-211:2014EN 62271-211:2014 - 2 - Foreword The text of document 17C/596/FDIS, future edition 2 of IEC 62271-211, prepared by SC 17C, “High-voltage switchgear and

13、 controlgear assemblies“, of IEC TC 17, “Switchgear and controlgear“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62271-211:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical na

14、tional standard or by endorsement (dop) 2015-02-28 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-05-29 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN

15、shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62271-211:2014 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be

16、 added for the standards indicated: IEC 62271-209:2007 NOTE Harmonised in EN 62271-209:2007 (not modified). BS EN 62271-211:2014- 3 - EN 62271-211:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in w

17、hole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publica

18、tion has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu Publication Year Title EN/HD Year IEC 60076 series Power transformers

19、- Part 1: General EN 60076 series IEC 60137 2008 Insulated bushings for alternating voltages above 1 000 V EN 60137 2008 IEC 61936-1 - Power installations exceeding 1 kV a.c. - Part 1: Common rules EN 61936-1 - IEC 62271-1 2007 High-voltage switchgear and controlgear - Part 1: Common specifications

20、EN 62271-1 2008 IEC 62271-203 2011 High-voltage switchgear and controlgear - Part 203: Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV EN 62271-203 2012 IEC 62271-207 - High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated switchgear assem

21、blies for rated voltages above 52 kV EN 62271-207 - BS EN 62271-211:2014EN 62271-211:2014 - 4 - Annex ZB (informative) A-deviations A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CENELEC member. This European Standard d

22、oes not fall under any Directive. In the relevant CEN/CENELEC countries these A-deviations are valid instead of the provisions of the European Standard until they have been removed. Clause 5 Deviation Italy (Ministerial Decree of December 1, 1980 and September 10, 1981, published in the Gazzetta Uff

23、iciale No. 285, 1981-10-16). Gas-filled compartments having a design pressure exceeding 0,5 bar (gauge) or a volume exceeding 2000 litres shall be designed to the Italian pressure vessel code for electrical switchgear. BS EN 62271-211:2014 2 IEC 62271-211:2014 IEC 2014 CONTENTS 1 General . 6 1.1 Sco

24、pe 6 1.2 Normative references . 6 2 Normal and special service conditions . 7 2.1 Normal service conditions 7 2.2 Special service conditions 7 3 Terms and definitions 7 4 Rating 8 4.1 Rated voltage (Ur) . 8 4.2 Rated insulation level . 8 4.3 Rated frequency (fr) . 9 4.4 Rated continuous current (Ir)

25、 and temperature rise 9 4.5 Rated short-time withstand current (Ik) and rated thermal short-time current (Ith) . 9 4.6 Rated peak withstand current (Ip) and rated dynamic current (Id) 9 4.7 Rated duration of short-circuit (tk) and rated duration (tth) . 9 4.8 Rated filling pressure preof gas for ins

26、ulation 9 5 Design and construction 10 5.1 Limits of supply 10 5.2 Pressure withstand requirements . 11 5.3 Gas and vacuum tightness . 11 5.4 Mechanical forces applied on the connection interface . 12 5.5 Mechanical forces applied on the bushing flange . 12 5.6 Horizontal and vertical displacement 1

27、3 5.7 Vibrations 13 6 Type tests . 14 6.1 General 14 6.2 Dielectric tests . 14 Dielectric tests of bushing . 14 6.2.1Dielectric tests of transformer connection in a single phase 6.2.2enclosure 14 Dielectric tests of transformer connection in a three phase 6.2.3enclosure 14 6.3 Cantilever load withst

28、and tests. 14 6.4 Gas tightness tests 15 7 Routine tests . 15 7.1 General 15 7.2 External pressure test of the bushing . 15 7.3 Tightness tests 15 8 Standard dimensions and tolerances . 15 8.1 Single-phase direct connection between oil-filled transformer and switchgear . 15 8.2 Three-phase direct co

29、nnection between oil-filled transformer and switchgear . 15 8.3 Connection between gas-insulated transformer and switchgear . 16 BS EN 62271-211:2014IEC 62271-211:2014 IEC 2014 3 8.4 Transformer tolerances 16 8.5 Mounting of the transformer on its foundation 16 9 Information to be given with enquiri

30、es, tenders and orders 16 10 Transport, storage, erection, operation and maintenance 16 Bibliography 21 Figure 1 Typical direct connection between power transformer and gas-insulated metal-enclosed switchgear 17 Figure 2 Standard dimensions for typical direct connection between power transformer and

31、 gas-insulated metal-enclosed switchgear 18 Figure 3 Transformer tolerances for a typical direct connection shown on the example of a three-phase power transformer connected to a single-phase gas-insulated metal-enclosed switchgear . 19 Figure 4 Transformer tolerances for a typical direct connection

32、 shown on the example of a three-phase power transformer connected to a three-phase gas-insulated metal-enclosed switchgear up to 170 kV . 20 Table 1 Moment and forces applied on the bushing flange and transformer . 13 BS EN 62271-211:2014 6 IEC 62271-211:2014 IEC 2014 HIGH-VOLTAGE SWITCHGEAR AND CO

33、NTROLGEAR Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV 1 General 1.1 Scope This part of IEC 62271 is applicable to single and three phase direct connections between gas-insulated metal-enclosed switchgear (GIS) for

34、rated voltages above 52 kV and transformer arrangements to establish electrical and mechanical interchange ability and to determine the limits of supply of for the transformer connection. Direct connections are immersed on one end in the transformer oil or insulating gas and on the other end in the

35、insulating gas of the switchgear. Transformer arrangements are single-phase transformers with single-phase enclosed arrangement, three-phase transformers with three single-phase enclosed arrangements or three-phase transformers with a three-phase enclosed arrangement with three transformer bushings.

36、 The connection satisfies the requirements of IEC 62271-203 for gas-insulated metal-enclosed switchgear, IEC 60076 for power transformer and IEC 60137 for completely immersed bushings. For the purpose of this international standard the term “switchgear“ is used for “gas-insulated metal-enclosed swit

37、chgear“. 1.2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includin

38、g any amendments) applies. IEC 60076 (all parts), Power transformers IEC 60137:2008, Insulated bushings for alternating voltages above 1 000 V IEC 61936-1, Power installations exceeding 1 kV a.c. Part 1: Common rules IEC 62271-1:2007, High-voltage switchgear and controlgear Part 1: Common specificat

39、ions IEC 62271-203:2011, High-voltage switchgear and controlgear Part 203: Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV IEC 62271-207, High-voltage switchgear and controlgear Part 207: Seismic qualification for gas-insulated switchgear assemblies for rated voltages above 52

40、 kV BS EN 62271-211:2014IEC 62271-211:2014 IEC 2014 7 2 Normal and special service conditions 2.1 Normal service conditions Subclauses 2.1 of IEC 62271-1:2007 and IEC 62271-203:2011 are applicable. 2.2 Special service conditions Subclauses 2.2 of IEC 62271-1:2007 and IEC 62271-203:2011 are applicabl

41、e. 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 62271-1, as well as the following apply. 3.1 bushing device that enables a conductor to pass through a transformer tank, and insulates the conductor from it Note 1 to entry: The means of attachment (

42、flange or fixing device) to the tank forms part of the bushing. SOURCE: IEC 60050-471:2007, 471-02-01, modified update of the definition 3.2 completely immersed bushing a bushing both ends of which are intended to be immersed in an insulating medium other than ambient air (e.g. oil or gas) SOURCE: I

43、EC 60050-471:2007, 471-02-04 3.3 gas-insulated switchgear enclosure part of gas-insulated metal-enclosed switchgear retaining the insulating gas under the prescribed conditions necessary to maintain safely the highest insulation level, protecting the equipment against external influences and providi

44、ng a high degree of protection to personnel SOURCE: 3.103 of IEC 62271-203:2011 3.4 main circuit end terminal part of the main circuit of a gas-insulated metal enclosed switchgear forming part of the connection interface SOURCE: 3.2 of IEC 62271-209:2007 3.5 transformer connection enclosure part of

45、the gas-insulated metal-enclosed switchgear which houses one end of a completely immersed bushing fitted on a power transformer and a main circuit end terminal 3.6 maximum operating gas pressure maximum pressure of the gaseous insulating medium in which one end of the bushing is immersed, when in op

46、eration, the switchgear-power transformer connection assembly carrying its rated normal current at the maximum ambient air temperature BS EN 62271-211:2014 8 IEC 62271-211:2014 IEC 2014 3.7 design pressure of the enclosure relative pressure used to determine the design of the enclosure Note 1 to ent

47、ry: It is at least equal to the maximum operating gas pressure in the enclosure at the highest temperature that the gas used for insulation can reach under specified maximum service conditions SOURCE: 3.113 of IEC 62271-203:2011, modified update of the note to entry 3.8 rated filling pressure preof

48、gas for insulation pressure (in Pa), for insulation, referred to the standard atmospheric air conditions of +20 C and 101,3 kPa, which may be expressed in relative or absolute terms, to which the assembly is filled before being put into service SOURCE: 3.6.5.1 of IEC 62271-1:2007, modified update of

49、 the term and the definition 3.9 minimum functional pressure pmefor insulation pressure (in Pa), for insulation, referred to the standard atmospheric air conditions of +20 C and 101,3 kPa, which may be expressed in relative or absolute terms at which and above which the characteristics of the switchgear-power-transformer connection are maintained and at which replenishment becomes necessary SOURCE: 3.6.5.5 of IEC 62271-1:2007, modified update of the term and the definition 3.10 ins